Help, friend problem.?

Hi,. Im 13. I got in a wreck two days ago. I invited 2 friends over today and omg Im ready for them to leave.... Since my body is still hurting from that wreck, Im getting annoyed by them bad. Its 1:30 and Im trying to sleep away the paiin and them to are just laughing and moving everywhere. I grab my sister and put her in my bedroom and I grab the bblankings and pillows, when i went in the frontroom again, my friend just stared at me, so i shouted "Move" and she did. I putted on fb saying Im not gonna talk to anybody until my body is not in pain as much. I really dont know why aim getting annoyed by them. Help 10 points